[SOLVED] Quick fix Konica-Minolta 7728 list error codes

[SOLVED] Quick fix Konica-Minolta 7728 list error codes

– Compatible Printer model: Konica-Minolta bizhub 7728
– Konica-Minolta bizhub 7728 Error Codes with quick guides:

• Code: C0001
• Description: LCT Communication Failure
  – Due to a software malfunction, etc., the time on the watchdog timer has run out and a reset is performed.
• Troubleshooting Guides:

• Code: C0202
• Description: Tray 1 Elevator Failure
  – The Lift-Up Sensor is not unblocked even after the set period of time has elapsed after the paper lift up operation for the drawer has begun.
• Troubleshooting Guides: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. 2 Check the connector of each motor for proper drive coupling, and correct as necessary. 3 Check the PU1 connector for proper connection and correct as necessary. 4 PC6 I/O check. 5 PC12 I/O check. 6 PC114-PF I/O check. 7 PC123-PF I/O check. 8 M7 operation check. 9 M8 operation check. 10 M124-PF operation check. 11 M125-PF operation check. 12 Change PWB-A. 13 Change PWB-C2. 14 Change PU1.

• Code: C0204
• Description: Tray 2 Elevator Failure
  – The Lift-Up Sensor is not unblocked even after the set period of time has elapsed after the paper lift up operation for the drawer has begun.
• Troubleshooting Guides: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. 2 Check the connector of each motor for proper drive coupling, and correct as necessary. 3 Check the PU1 connector for proper connection and correct as necessary. 4 PC6 I/O check. 5 PC12 I/O check. 6 PC114-PF I/O check. 7 PC123-PF I/O check. 8 M7 operation check. 9 M8 operation check. 10 M124-PF operation check. 11 M125-PF operation check. 12 Change PWB-A. 13 Change PWB-C2. 14 Change PU1.

• Code: C0206
• Description: Tray 3 Elevator Failure
  – The Lift-Up Sensor is not unblocked even after the set period of time has elapsed after the paper lift up operation for the drawer has begun.
• Troubleshooting Guides: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. 2 Check the connector of each motor for proper drive coupling, and correct as necessary. 3 Check the PU1 connector for proper connection and correct as necessary. 4 PC6 I/O check. 5 PC12 I/O check. 6 PC114-PF I/O check. 7 PC123-PF I/O check. 8 M7 operation check. 9 M8 operation check. 10 M124-PF operation check. 11 M125-PF operation check. 12 Change PWB-A. 13 Change PWB-C2. 14 Change PU1.

• Code: C0208
• Description: Tray 4 Elevator Failure
  – The Lift-Up Sensor is not unblocked even after the set period of time has elapsed after the paper lift up operation for the drawer has begun.
• Troubleshooting Guides: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. 2 Check the connector of each motor for proper drive coupling, and correct as necessary. 3 Check the PU1 connector for proper connection and correct as necessary. 4 PC6 I/O check. 5 PC12 I/O check. 6 PC114-PF I/O check. 7 PC123-PF I/O check. 8 M7 operation check. 9 M8 operation check. 10 M124-PF operation check. 11 M125-PF operation check. 12 Change PWB-A. 13 Change PWB-C2. 14 Change PU1.

• Code: C0209
• Description: LCT Elevator Motor Failure
  – The Elevator Motor Pulse Sensor (PC10-LCT) cannot detect both edges of H/L even after the set period of time has elapsed while the Elevator Motor (M5-LCT) is turning backward/forward (raise/lower).
• Troubleshooting Guides:

• Code: C0211
• Description: Bypass Lifting Motion Failure
  – The Bypass Lift Sensor (PC29) is not blocked or unblocked even after the set period of time has elapsed after the Bypass Pick-Up Solenoid (SL3) is energized after the manual feed paper take-up operation has begun.
• Troubleshooting Guides: 1 Check the SL3 connector for proper connection and correct as necessary. 2 Check cam position.. 3 PC29 I/O check PWB-A. 4 SL3 operation check. 5 Change PWB-A.

• Code: C0212
• Description: LCT Ejection Failure
  – See PC-407 sevice manual
• Troubleshooting Guides:

• Code: C0213
• Description: LCT Shift Gate Malfunction
  – See PC-407 sevice manual
• Troubleshooting Guides:

• Code: C0214
• Description: LCT Shifting Failure
  – See PC-407 sevice manual
• Troubleshooting Guides:

• Code: C0215
• Description: LCT Shift Motor Malfunction
  – See PC-407 sevice manual
• Troubleshooting Guides:

• Code: C0701
• Description: Manual Paper Size Detection Adjustment Failure
  – The control value of the Manual Paper Size Detection Unit does not fall within the specified range when an adjustment is made of manual paper size detection.
• Troubleshooting Guides: 1 Check the VR1 connector for proper connection and correct as necessary. 2 Readjust the VR1. 3 Replace VR1. 4 Change PWB-A.

• Code: C1080
• Description: Exit Option Communication Failure
  – The connection status of a finishing option is changed after the copier has been turned on.
• Troubleshooting Guides: 1 Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 2 Check the PWB-A FN and the PWB-A for proper connection, and correct as necessary. 3 Change PWB-A FN. 4 Change PWB-A.

• Code: C1183
• Description: Elevator Motor Ascent/Descent Drive Failure
  – See FS-530/ PU-501/ OT-602 service manual.
• Troubleshooting Guides:

• Code: C1190
• Description: Aligning Plate 1 Drive Failure
  – See FS-530/ PU-501/ OT-602 service manual.
• Troubleshooting Guides:

• Code: C1191
• Description: Aligning Plate 2 Drive Failure
  – See FS-530/ PU-501/ OT-602 service manual.
• Troubleshooting Guides:

• Code: C11A0
• Description: Paper-Lifter Drive Failure
• Troubleshooting Guides:

• Code: C11A1
• Description: Exit Roller Pressure/Retraction Failure
  – See FS-530/ PU-501/ OT-602 service manual.
• Troubleshooting Guides:

• Code: C11A2
• Description: Saddle Exit Roller Pressure/ Retraction Failure
  -See SD-507 service manual.
• Troubleshooting Guides:

• Code: C11A3
• Description: Shutter Drive Failure
  – See FS-530/PU-501/OT-602 service manual.
• Troubleshooting Guides:

• Code: C11A4
• Description: Saddle Exit Motor Failure
  – See SD-507 service manual.
• Troubleshooting Guides:

• Code: C11A5
• Description: Saddle In & Out Guide Motor Failure
  – – See SD-507 service manual.
• Troubleshooting Guides:

• Code: C11A6
• Description: Saddle Layable Guide Motor Drive Failure
  – See SD-507 service manual.
• Troubleshooting Guides:

• Code: C11B0
• Description: Staple Unit CD Drive Failure
  – See FS-530/PU-501/OT-602 service manual.
• Troubleshooting Guides:

• Code: C11B2
• Description: Staple Drive Failure
  – See FS-530/PU-501/OT-602 service manual.
• Troubleshooting Guides:

• Code: C11B5
• Description: Saddle Staple 1 Drive Failure
  – See SD-507 service manual.
• Troubleshooting Guides:

• Code: C11B6
• Description: Saddle Staple 2 Drive Failure
  – See SD-507 service manual.
• Troubleshooting Guides:

• Code: C11C0
• Description: Punch Cam Motor Unit Failure
  – See FS-530/PU-501/OT-602 service manual.
• Troubleshooting Guides:

• Code: C11D0
• Description: Crease Motor Drive Failure
  – See SD-507 service manual.
• Troubleshooting Guides:

• Code: C2211
• Description: IU Motor Failure
  – The IU Motor Lock signal remains set to H for a set period of time while the IU Motor is turning.
  – The IU Motor Lock signal remains set to L for a set period of time while the IU Motor remains stopped.
• Troubleshooting Guides: 1 Check the M2 connector for proper connection and correct as necessary. 2 Check the M2 for proper drive coupling, and correct as necessary. 3 Check the PWB-A connector for proper connection and correct as necessary. 4 M2 operation check PWB-A PJ28A-11 (REM) M-4 5 Change PWB-A. 6 Change PU1.

• Code: C2351
• Description: Toner Suction Fan Motor Failure
  – The Toner Suction Fan Motor Lock signal remains set to H for a set period of time while the Toner Suction Fan Motor is turning.
  – The Toner Suction Fan Motor Lock signal remains set to L for a set period of time while the Toner Suction Fan Motor remains stopped.
• Troubleshooting Guides: 1 Check the M11 connector for proper connection and correct as necessary. 2 Check the fan for possible overload, and correct as necessary. 3 Check the PWB-A connector for proper connection and correct as necessary. 4 M11 operation check PWB-A PJ5A-13 (REM) D-14 5 Change PWB-A. 6 Change PU1.

• Code: C2431
• Description: IU Fuse Blowing Failure
  – The fuse is not blown even after the lapse of a predetermined period of time.
• Troubleshooting Guides: 1 Check the UN2 connector for proper connection and correct as necessary. 2 Remove the Developing Unit from the IU, and then replace UN2. 3 Run F8. 4 Change PWB-A. 5 Change PU1N.

• Code: C2557
• Description: ATDC Sensor Failure
  – The scanning value of the ATDC Sensor is less than 7 % while the IU Motor is turning.
  – The scanning value of the ATDC Sensor is more than 19 % while the IU Motor is turning.
• Troubleshooting Guides: 1 Check the UN2 connector for proper connection and correct as necessary. 2 Remove the Developing Unit from the IU, and then replace UN2. 3 Run F8. 4 Change PWB-A. 5 Change PU1N.

• Code: C255C
• Description: ATDC Adjustment Failure
  – The adjustment of the ATDC control voltage could not be completed in the set period of time when function F8 is run.
  – The ATDC control voltage was not within the range of 5.39 V to 8.15 V when function F8 is run.
• Troubleshooting Guides: 1 Check the UN2 connector for proper connection and correct as necessary. 2 Remove the Developing Unit from the IU, and then replace UN2. 3 Run F8. 4 Change PWB-A. 5 Change PU1N.

• Code: C2654
• Description: EEPROM Failure
  – An EEPROM where no initial data is written is detected
• Troubleshooting Guides: 1 Disconnect and then connect the power cord. Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 2 Check the EEPROM on the Mechanical Control Board for proper connection, and correct as necessary. 3 Change PWB-A. 4 Change EEPROM.

• Code: C2702
• Description: Abnormal Image Transfer Voltage
  – The image transfer voltage exceeds 100 V for the set period of time while the IU Motor remains stopped.
• Troubleshooting Guides: 1 Check the installation of the Transfer Roller. 2 Change HV1

• Code: C3451
• Description: Fusing Warm-Up Failure (Main)
  – The Fusing Roller Thermistor does not detect the required temperature within 30 sec. after a warmup cycle has begun; therefore, the copier does not complete the warm-up cycle.
  – The temperature of the Fusing Rollers does not reach the required level even after the set period of time has elapsed during a warm-up cycle.
• Troubleshooting Guides: 1 Check that the H1 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 2 Check that the H2 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 3 Check the installation of the TH1 and the TH2, and correct or clean as necessary. 4 Check the operation of the TH1. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the TH2. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the H1. Correct or replace as necessary. 7 Check the continuity of the H2. Correct or replace as necessary. 8 Change PU1. 9 Change PWB-A.

• Code: C3452
• Description: Fusing Warm-Up Failure (Sub)
  – The Fusing Roller Sub Thermistor does not detect the required temperature within 30 sec. after a warm-up cycle has begun; therefore, the copier does not complete the warm-up cycle.
  – The temperature of the Fusing Rollers does not reach the required level even after the set period of time has elapsed during a warm-up cycle.
• Troubleshooting Guides: 1 Check that the H1 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 2 Check that the H2 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 3 Check the installation of the TH1 and the TH2, and correct or clean as necessary. 4 Check the operation of the TH1. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the TH2. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the H1. Correct or replace as necessary. 7 Check the continuity of the H2. Correct or replace as necessary. 8 Change PU1. 9 Change PWB-A.

• Code: C3751
• Description: High Fuser Temperature Failure (Main)
  – The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature above 240 °C when the Main Power Switch is set to ON.
• Troubleshooting Guides: 1 Check that the H1 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 2 Check that the H2 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 3 Check the installation of the TH1 and the TH2, and correct or clean as necessary. 4 Check the operation of the TH1. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the TH2. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the H1. Correct or replace as necessary. 7 Check the continuity of the H2. Correct or replace as necessary. 8 Change PU1. 9 Change PWB-A.

• Code: C3752
• Description: High Fuser Temperature Failure (Sub)
  – The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature above 240 °C when the Main Power Switch is set to ON.
• Troubleshooting Guides: 1 Check that the H1 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 2 Check that the H2 comes on when the Main Power Switch is set to ON, and correct or replace as necessary. 3 Check the installation of the TH1 and the TH2, and correct or clean as necessary. 4 Check the operation of the TH1. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the TH2. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the H1. Correct or replace as necessary. 7 Check the continuity of the H2. Correct or replace as necessary. 8 Change PU1. 9 Change PWB-A.

• Code: C3851
• Description: Low Fuser Temperature Failure (Main)
  – The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105 °C during standby.
  – The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105 °C during printing.
• Troubleshooting Guides: 1 Check that the H1 comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 2 Check that the H2 comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 3 Check the installation of the TH1 and the TH2, and correct or clean as necessary. 4 Check the operation of the TH1. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the TH2. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the H1. Correct or replace as necessary. 7 Check the continuity of the H2. Correct or replace as necessary. 8 Change PU1. 9 Change PWB-A.

• Code: C3852
• Description: Low Fuser Temperature Failure (Sub)
  – The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105 °C during standby.
  – The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105 °C during printing.
• Troubleshooting Guides: 1 Check that the H1 comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 2 Check that the H2 comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 3 Check the installation of the TH1 and the TH2, and correct or clean as necessary. 4 Check the operation of the TH1. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the TH2. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the H1. Correct or replace as necessary. 7 Check the continuity of the H2. Correct or replace as necessary. 8 Change PU1. 9 Change PWB-A.

Solve Konica-Minolta bizhub 7728 Error codes

• Code: C4001
• Description: Main body Communication Failure
  Communications with the Mechanical Control Board and the MFBS Board/MFBS2 Board fail.
• Troubleshooting Guides: 1 Check the MFBS/MFBS2 connector for proper connection, and correct as necessary. 2 Check the PWB-A connector for proper connection, and correct as necessary. 3 Check the flat cable between MFBS/MFBS2 and PWB-A for proper connection, and correct as necessary. 4 Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 5 Change MFBS/MFBS2. 6 Change PWB-A.

• Code: C4002
• Description: HSYNC Detection Failure
  – No SOS falling edges are detected within the set period of time after laser emission began while the Polygon Motor is turning.
  – No SOS falling edges are detected while VIA remains ON.
• Troubleshooting Guides: 1 Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 2 Check the PH and the PWB-A connectors for proper connection, and correct as necessary. 3 Change PH. 4 Change PWB-A.

• Code: C4101
• Description: Polygon Motor Failure
  – The Polygon Motor Lock signal could not be detected within the set period of time after the Polygon Motor is energized. (Faulty start detection)
  – No First Lock signals are detected during the 1- second period that starts 1 second after a First Lock signal. (Faulty lock signal detection)
  – The Polygon Motor Lock signal could not be detected after the set period of time has elapsed while the Polygon Motor is turning. (Out-of-timing lock detection)
  – The Polygon Motor Lock signal is set to ON for longer than the set period of time while the Polygon Motor remains stopped. (Abnormal lock detection)
• Troubleshooting Guides: 1 Check the PH connector for proper connection, and correct as necessary. 2 Change PH. 3 Change PWB-A.

• Code: C4721
• Description: Main Body G/A Communication Failure
  – Communications with the gate array for expansion I/O (the IC mounted on the Mechanical Control Board) fail.
• Troubleshooting Guides: 1 Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 2 Check each control board and the PWB-A for proper connection, and correct as necessary. 3 Change PWB-A.

• Code: C5102
• Description: Main Motor Failure
  – The Transport Motor Lock signal remains set to H for a set period of time while the Transport Motor is turning.
• Troubleshooting Guides: 1 Check the M1 connector for proper connection, and correct as necessary. 2 Check the M1 for proper drive coupling, and correct as necessary. 3 Check the PWB-A connector for proper connection and correct as necessary. 4 M1 operation check PWB-A PJ28A-4 (REM) M-4 5 Change PWB-A. 6 Change PU1.

• Code: C5351
• Description: Power Supply Cooling Fan Motor Failure
  – The Power Supply Cooling Fan Motor Lock signal remains set to H for a set period of time while the Power Supply Cooling Fan Motor is turning.
  – The Power Supply Cooling Fan Motor Lock signal remains set to L for a set period of time while the Power Supply Cooling Fan Motor remains stopped.
• Troubleshooting Guides: 1 Check the M4 connectors for proper connection, and correct as necessary. 2 Check the fan for possible overload, and correct as necessary. 3 M4 operation check PWB-A PJ33A-1 (REM) D-5 4 Change PU1.

• Code: C5352
• Description: Cooling Fan Motor Failure
  – The Cooling Fan Motor Lock signal remains set to H for a set period of time while the Cooling Fan Motor is turning.
  – The Cooling Fan Motor Lock signal remains set to L for a set period of time while the Cooling Fan Motor remains stopped
• Troubleshooting Guides: 1 Check the M5 connectors for proper connection, and correct as necessary. 2 Check the fan for possible overload, and correct as necessary. 3 M5 operation check. 4 Change PWB-A.

• Code: C5353
• Description: IU Cooling Fan Motor Failure
  – The IU Cooling Fan Motor Lock signal remains set to H for a set period of time while the IU Cooling Fan Motor is turning.
  – The IU Cooling Fan Motor Lock signal remains set to L for a set period of time while the IU Cooling Fan Motor remains stopped.
• Troubleshooting Guides: 1 Check the M6 connectors for proper connection, and correct as necessary. 2 Check the fan for possible overload, and correct as necessary. 3 M6 operation check. 4 Change PWB-A.

• Code: C7001
• Description: Engine connection error
  – The system fails in checking initial engine connection when the Power Switch is turned ON.
  – The system succeeded in checking initial connection when the Power Switch was turned ON; then it fails in rechecking initial connection through the execution of a software reset when a communications error occurs during operation.
• Troubleshooting Guides: 1 Check the connection between Mechanical Control Board and BCRS Board. 2 Reset the malfunction and turn OFF and ON the Power Switch. 3 Change BCRS. 4 Change PWB-A.

• Code: C8301
• Description: ADF Fan Motor Failure
  – See DF-620 service manual.
• Troubleshooting Guides:

• Code: C9701
• Description: ADF Document Size Failure Adjustment
  – See DF-620 service manual.
• Troubleshooting Guides:

• Code: CA052
• Description: MIO Device Failure
  – The MIO device does not operate properly
• Troubleshooting Guides: 1 Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 2 Check the BCRS connectors for proper connection, and correct as necessary. 3 Change BCRS.

• Code: CC153
• Description: Flash ROM Failure
  – The Flash ROM data was determined to be faulty when the unit was turned on.
• Troubleshooting Guides: 1 Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 2 The firmware data is overwritten. 3 Change PWB-A.

• Code: CC155
• Description: Exit Option Flash ROM Failure
  – See FS-530/PU-501/OT-602 service manual.
• Troubleshooting Guides:

• Code: CD004
• Description: HDD error
  – When error occurs during deletion of HDD data.
• Troubleshooting Guides: 1 Turn OFF the Main Power Switch, wait for 10 sec. or more, and turn ON the Main Power Switch. 2 Check theHard Disk connector for proper connection and correct as necessary. 3 Reinstall the Hard Disk. 4 Change Hard Disk. 5 Change MFBS/MFBS2.

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